Wessington Springs herald. (Wessington Springs, Aurora County, Dakota [S.D.]) 1883-1891, 1887-12-30
USE OF MAGNETS.
Results Ct Careful Scientific Experiments
Metals srtth Attractive Po,ce,s.
GTo1den nova1 gf.F

Results Ct Careful Scientific departments
Metals NTH Attractiue Po,ceys.
Golden Days.l
The natural magnet, or loadstone,
is ON ore of iron, every molocule Of
which is composed of three atoms Of
iron combined with four atoms of oxy-$
gen gas.
This loadstone has the power of at-
tracing small pieces of iron, and, if
balanced and suspended, will point
nearly north and south. 5
Artificial magnets are pieces of IRON
or steel which have been under the ac-
ton of either loadstone or other
magnets, or of on electric current, or
have been subjected to percussion
while in certain positions.
Permanent magnets are those which
retain their magnetic properties per-
manently. They are made of hard
steel, in bars, or bent in the form of q
horseshoe.
Temporary magnets are those which
retain their magnetic properties only
as long as they are under the influence
of other magnets or an electric current.
They are bars of soft iron, either
straight or bent like horseshoe.
The poles of q magnet are the two
points of greatest attraction and
repulsion. They are near the two
ends.
Magnetic polarity-Balance horse
shoe magnet by tying thread around
its middle and suspend it. 1t comes to
rest nearly north and south. Call the
end pointing north the north-seeing
pole, and the south the south-seeking
pole. Take strip of steel which has
been rendered magnetic by discharging
a Leyden battery across it, and suspend
in like manner. It will also come to
rest nearly north and south.
I Place sheet of cardboard over
horseshoe magnet lying on table.
Scatter iron Filings all over the card
board and tap it. Notice the curves at
the poles. Move the magnet under the
cardboard, and the filings will move
like lot of insects.
Take strip of steel and draw it
from end to end over strong magnet.
The strip of steel becomes magnet.
Balance and suspend it by thread,
and do the same with horseshoe mag
net. Bring the north-seeking end of
the strip to the NOTWITHSTANDING end of
the horseshoe, and it will be repealed
Again, bring the south-seeking end of
i the strip to the north-seeking end of
/ the horseshoe Attraction will now
take place. This shows that unlike
poles attract and like poles repel one
another.
Heat red-hot an iron ball and sus-
pend it by athread. Bring pole of
powerful magnet near to the ball,
and the latter will not be attracted.
Keeping the magnet in the same po-
sition, wait until the ball has cooled,
and when sufficiently reduced in tenn
perature, it will be attracted. This
shows that, when red-hot, iron cannot
be magnetized.
Float small magnetic needle, fixed
horizontally to a cork, on water. The
needle will point nearly north and
south. This is owing to the great dis
lance of the earths magnetic pole,
which is attracting and repelling the
needle, the difference between attrac-
ton and repulsion being so small that
it gives direction only to the needle.
How to make an electro temporary
magnet out of horseshoe of soft
iron: q
Take piece of insulated copper wire
and coil it around one of the arms
of horseshoe of soft iron in
left-handed helix. After making
double by coiling in the same direction,
pass over tc the other arm and coil the
wire in left-handed helix backward
and forward once. Connect the ends
Of each wire with the two plates of an
electric battery, and the horseshoe
will become strong magnet.
To make an electric (voltaic) battery
to use with the electromagnetic, get a
glass jar and in the bottom place a
strip Of copper. Over the copper
place a strip Of zinc aud connect cop
per and zinc with the wires of an cleo
tro-maguet. Use insulated wire from
copper to top Of jar. Cover the copper
with blue vitriol and fill up the jar with
water. Let it remain for about twelve
hours and it will then be ready for use.
SOO1HINti TIE SAt.AGE BE-JST
b On one occasion, while in a barroom
I Van Amburgh, the great lion tanner,
now dead, was asked how he got his
wonderful power over animals. He
said: sit is by showing them that
Tn not the least afraid Of them and by
keeping my eye steadily on the rs. I'll
give you an example of the power OF
my eye
Pointing to q loutish fellow " no was
sitting opposite Van Amburgh, said: